To deactivate the existing buttons on your website, go to Configuration > Basic Settings > Configuration in the backend menu and scroll down to "Action buttons visibility".
Alternatively, you can create buttons as articles in the CMS. Choose the article type “Button” or “Teaser (with image)”, in case you’d like to add some additional text or an image.
The button text, link, alignment and size are always adjustable.
For a more dynamic display, try the module type “Zeilenausgabe” to change the display of text and buttons to 2 columns (50:50 or 66:33) for example.